Samsung CLP 300N Service Manual - Page 72
Periodic Defective Image, Black Spot and line and Periodic Band
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Alignment and Adjustmens 6.5 Periodic Defective Image If an image defects appears at regular intervals on the printed-paper, it is due to a faulty or damaged roller. Refer to the table below and check the condition of the appropriate roller. No Roller 1 OPC Drum 2 Charge Roller 3 Supply Roller 4 Developing Roller 5 1st Transfer Roller 6 2nd Transfer Roller 7 Heat Roller 8 Pressure Roller Period 188.5 mm 37.7mm 47.5mm 26.0mm 32.7mm 57.5mm 86.6mm 86.6mm Phenomenon White and Black Spots Black Spot and line and Periodic Band Periodic Band by little difference of density White Spot, Horizontal black band Ghost, Damaged Image by abnormal tranfer Ghost, Damaged Image by abnormal tranfer Black Spots or Vertical Black Band Background 6-12 Service Manual Samsung Electronics
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